Who's fault was that
Draymond x5
Klay x3
ZaZa x4
Curry x4 (Bradley only scored on him 2-3 times, hitting tough/contested shots - contrary to your belief that he was cooking him all game - Curry was playing great ball-denial and shadow defense when he was guarding him, including that masterful stop at the end of the game.)
Iggy x2
West x1
Durant x2
Reggie (especially) and Avery were hitting tough, contested shots all game, against nearly everyone, and there wasn't much the Warriors could do about it. The Warriors contested 84% of the Pistons total shots (Pistons only contested 62% of the Warriors shots), which is unheard of, combine that with the Warriors size/length and 8-9 times out of 10 that would result in a great defensive performance. But the Pistons were just hot, in rhythm, and having one of those type of games.